The Trillium Compact family of broadband seismometers are low power, highly accurate, rugged, reliable and easy-to-install sensors that are used in more seismic networks around the globe than any other seismometers of their kind.

Trillium Compact Posthole

Our most popular line of seismometers

The Trillium Compact seismometer is available in several variants to facilitate vault, surface or buried downhole deployments.

Quality data within minutes

The exceptionally small size of all Trillium Compacts, and the fact that no mass lock and no mass centering is needed, significantly reduces the time and effort required for site preparation and installation. Plus, no further intervention is required for continuous quality data within minutes of deployment.

Trillium Compact 20

Trillium Compact

The Trillium Compact 20s has a wide operational tilt range of ±10° and is suitable for downhole installations where the seismometer cannot be levelled, or for rapid deployments where a quick settling time is needed. The 20s is available in surface and posthole variations.

Trillium Compact 120

The Trillium Compact 120s has lower long-period noise and a narrower tilt range of ±2.5°. They are suitable for installations where the seismometer can be manually levelled or placed on a level surface, such as in a vault or at the bottom of a suitably prepared borehole. The 120s is available in surface and posthole variations.

Trillium Cascadia

Trillium Cascadia

The Compact family now includes the Trillium Cascadia. This dual-purpose sensor combines the technology of the 120s Compact with a Titan, for measuring both strong and weak motion.